Crease Recovery Tester determines the property of textiles to recover from creases by measurement of the Recovery Angle. Crease or fold of textile material is a complex effect involving tensile, compressive, flexing and torsional stresses.
The sample is first creased under a specified load for a particular time and is then transferred to the measurement device, where one end of the sample is held with a spring loaded clamp and other is allowed to fall free under its own weight. Now one needs to read the scale fixed to moving clamp to know the deflection of the clamped end from the horizontal. This angle gives a measure of the Crease Recovery Angle. The crease recovery angle is directly read on the circular scale.